part_of part of part of preceded by preceded by preceded_by simultaneous_with simultaneous with simultaneous with only_in_taxon only in taxon occurrent animal organ development Eumetazoa embryo stage part embryo stage life cycle stage neurula stage organogenesis stage https://github.com/obophenotype/developmental-stage-ontologies/issues/84 https://github.com/obophenotype/uberon/issues/533 uberon OGES:000032 segmentation stage BILS:0000111 Wikipedia:Organogenesis OGES:000005 UBERON:0000111 BilaDO:0000010 A stage at which the ectoderm, endoderm, and mesoderm develop into the internal organs of the organism. MmusDv:0000018 HsapDv:0000015